What is PRT?

The most energy efficient urban mass
transit system that has been devised so far, PRT consists of small,
light-weight vehicles that hold anywhere from two to six passengers. The vehicles
run on elevated or ground level guide ways under computer control. PRT vehicles
are electric cars that are extremely quiet and run either on batteries or by
taking power from electric contacts on the guide way. PRT systems do not use
schedules; service is demand responsive, rather than on fixed schedules and is
available 24 hours a day and it takes you from your origination to your
destination with no stops in between.